Landau-Zener effect, superfluid model, cluster-decayThe Landau–Zener effect is generalized for many-body systems with pairing residual interactions. The microscopic equations of motion are obtained and the 14C decay of 223Ra spectroscopic factors are deduced. An asymmetric nuclear shape parametrization ...
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If the environmental spins are strongly coupled to the central spin, their effect on P is weak. In other cases LZ transitions are strongly suppressed and P is decreasing very slowly with the sweep-rate parameter epsilon ~ 1/v, v being the energy sweep rate....
The asymptotic staying probability P in the Landau-Zener effect with interaction is analytically investigated at fast sweep, epsilon = pi Delta^2/(2 hbar v) << 1. We have rigorously calculated the value of I_0 in the expansion P =~ 1 - epsilon + epsilon^2/2 + epsilon^2 I_0 for ...
Tunneling Josephson effect Bose-Einstein condensates in periodic potentials solitons vortices and topological excitationsWe study stationary and dynamical properties of the many-body Landau-Zener dynamics of a Bose quantum fluid confined in two coupled one-dimensional chains, using a many-body ...
17. Electric Charge Accumulation Effect in RTD:Lecture of Resonant Tunneling Devices(4) 共振隧穿二极管中的电荷积累效应——共振隧穿器件讲座(4) 18. Design on the Material Structure of RTD:Lecture of RTD(5) 共振隧穿二极管的材料结构设计——共振隧穿器件讲座(5)©...
We study the Landau-Zener transition with the quantum Zeno effect in an opendissipative system populated by a large number of bosons. Given the quantumZeno effect is strong enough, both discrete and continuous quantum Zenomeasurements are found to stabilize the Landau-Zener transition. Both the$\...
The SS theory takes into account the dephasing effect due to stochastic field fluctuations. Combining this theory with measurements of dephasing times for MM could lead to a revision in tunnel splitting calculations. But, as far as we know, there are no estimates for dephasing time of MM. The...
The IBS Center for Theoretical Physics of Complex Systems engineered Landau-Zener-Bloch oscillations within an intricate lattice structure that demonstrated intriguing properties.
We find that the nonreciprocity ratio P(−E)/P(+E) grows monotonically, as we increase δt and the effect of inversion symmetry breaking gets stronger. For small δt, the nonreciprocity ratio is linearly proportional to δt. In particular, large nonreciprocity of P(−E)/P(+E) ~...